83438166237 has 4 divisors (see below), whose sum is σ = 111250888320. Its totient is φ = 55625444156.

The previous prime is 83438166193. The next prime is 83438166239. The reversal of 83438166237 is 73266183438.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83438166237 - 2¹⁶ = 83438100701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83438166237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83438166239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13906361037 + ... + 13906361042.

It is an arithmetic number, because the mean of its divisors is an integer number (27812722080).

Almost surely, 2^83438166237 is an apocalyptic number.

It is an amenable number.

83438166237 is a deficient number, since it is larger than the sum of its proper divisors (27812722083).

83438166237 is a wasteful number, since it uses less digits than its factorization.

83438166237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27812722082.

The product of its digits is 3483648, while the sum is 51.

The spelling of 83438166237 in words is "eighty-three billion, four hundred thirty-eight million, one hundred sixty-six thousand, two hundred thirty-seven".